Carhartt Men's Big & Tall Base Force Extremes Super Cold Weather Bottom 60% Polyester, 33% Other Fibers, 7% Spandex Imported Machine Wash Fast dry with 37.5 technology Fights odors Smooth flat lock seams enhance comfort Tapered cuffs for warmth and comfort. Tag less 60 percent polyester, 33 percent cocona, 7 percent spandex